GPT-4O
GPT-4O is a chat model developed by OpenAI, capable of handling a wide range of tasks including code generation, reasoning, and text generation, with support for various input formats such as images, PDFs, and text. It is notable for its large context window of 128,000 tokens, allowing it to process and understand extensive amounts of information.
Input
Output
Context
128K
Max Output
16K
Parameters
-
Technical Specifications
Input Modalities
Output Modalities
Capabilities
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Benchmarks
Resources & Links
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Frequently asked questions about GPT-4O
Answered from the entry's own fields: context, license, modalities, evidence, serving and the memory to self-host.
GPT-4O advertises a context window of 128,000 tokens, with a maximum output of 16,384 tokens in a single response. The figure is the creator's published maximum; a given host may serve less, and the gateway routes on what each host actually serves.
No. GPT-4O is a proprietary model (license: Proprietary): its weights are not distributed, and it runs only through OpenAI's own API or a host with access to it.
GPT-4O accepts Image and Text and produces Text. The capabilities card on this page lists which API features each deployment honours, such as function calling and structured output, with the source each was checked against.
GPT-4O has published results from Artificial Analysis, shown by suite in the benchmarks card above exactly as the publisher reported them. Scores are not combined across suites, and a suite that has not measured GPT-4O is shown as not available rather than estimated.
Not on the managed pool today; GPT-4O is listed for reference and comparison. Connect your own provider key or endpoint that serves it and the gateway runs it on your account, with routing decisions recorded the same way.
GPT-4O cannot be self-hosted: its weights are not distributed. It is used through an API, either OpenAI's own or the Inferbase gateway where it is served.
Fields collected from public registries, host APIs and benchmark publishers, each tagged with its source.
Last updated: Sep 11, 2026
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